RX610 Group
8. Low Power Consumption
R01UH0032EJ0120 Rev.1.20
Page 198 of 1006
Feb 20, 2013
8.5.4.4
Setting Oscillation Settling Time after Deep Software Standby Mode is
Canceled
Set the WTSTS[5:0] bits in DPSWCR as follows:
1.
When using a crystal resonator
Set the WTSTS[5:0] bits so that the waiting time is no less than the oscillation settling time.
Table 8.5 shows EXTAL input clock frequencies and waiting time corresponding to each setting of the WTSTS[5:0]
bits.
2.
When using an external clock
The PLL circuit settling time is necessary. Set the waiting time referring to table 8.5.
Table 8.5 Oscillation Settling Time Setting
WTSTS5
WTSTS4
WTSTS3
WTSTS2
WTSTS1
WTSTS0
Waiting Time
(States)
EXTAL Input Clock Frequency
*
(MHz)
Unit
12
8
0
0
0
0
0
0
Reserved
μs
1
Reserved
1
0
Reserved
1
Reserved
1
0
0
Reserved
1
64
5.3
8.0
1
0
512
42.7
64.0
1
1024
85.3
128.0
1
0
0
0
2048
170.7
256.0
1
4096
0.34
0.51
ms
1
0
16384
1.37
2.05
1
32768
2.73
4.10
1
0
0
65536
5.46
8.19
1
131072
10.92
16.38
1
0
262144
21.85
32.77
1
524288
43.69
65.54
1
×
×
×
×
Reserved
1
×
×
×
×
×
Reserved
: Recommended time setting when an external clock is used
: Recommended time setting when a crystal resonator is used
Note:
*
The oscillation settling time (including oscillator’s unstable oscillation time) depends on the resonator
characteristics.
The values of the EXTAL input clock frequency in this table are reference values.
Summary of Contents for RX600 Series
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